Year	current US$
1987	1700000.0476837181
1988	26709999.740123756
1989	62869999.68625612
1990	109250000.48428771
1991	112180000.19900493
1992	94829998.18585825
1993	80699998.70099112
1994	130000001.0766089
1995	168399999.3875623
1996	231479999.04863513
1997	182349999.18937677
1998	182190001.65350723
1999	161400000.83111233
2000	112860002.20850109
2001	518180001.42276275
2002	225259999.6887149
2003	284690000.878647
2004	427000001.89430994
2005	703710006.8945434
2006	438169999.1226199
2007	744810000.6412714
2008	1090109997.035936
2009	1409249993.1063504
2010	1117210012.231022
2011	665749997.1464276
2012	317479998.54758376
2013	433970001.6118589
2014	160640000.9114295
2015	89520000.31620257
2016	126819999.78050584
2017	234990001.05820596
2018	145940001.4728309
2019	184009999.02375036
2020	166090001.28880134
2021	210109996.59448877
2022	229759999.64959925